This is the json response from my server . How can i parse it and store it in HashMap? Please help me.
{'records':
[{
'number':165,
'description': 'abcd'
},
{
'number':166,
'description': 'ab'
},
{
'number':167,
'description': 'abc'
}]
}
im new in android but maybe you can do something like this:
JSONObject JsonObject = new JSONObject(json);
JSONArray JsonArray_ = JsonObject .getJSONArray("records");
for (int i = 0; i < numberOfItems; i++) {
JSONObject record= JsonArray_photo.getJSONObject(i);
parsedObject.number = record.getString("number"); //its the same for all fields
map.add(parsedObject);
}
I done something like that for my own JSON parser. hope this helps. cheers
I suggest you look at the gson library, which makes it very easy indeed to parse JSON into an object representing the data. So you could create a Record object, with public member variables for number, description, and then use gson to parse the JSON into an object array.
http://code.google.com/p/google-gson/
Add the .jar to your libs folder and then use it like this:
Record[] records = new GsonBuilder().create().fromJson(jsonString,Record[].class)
int number = record[0].number;
The org.json package is included in Android: http://developer.android.com/reference/org/json/package-summary.html
Use is simple:
JSONObject json_object = new JSONObject(String json_string);
Each property can then be accessed as a Java property, e.g. json_object.property. It will throw a JSONException if the parsing fails for some reason (i.e., invalid JSON).
You can use Gson library, you can find full tutorial on softwarepassion.com
Related
I want to parse json from a url and use the json data with a listview.
I also want to only list the score and the name, but I have no idea how. Thanks.
{
"level":[
{
"id":1,
"server":[
{"score":33,"name":"Car"},
{"score":72,"name":"Bus"},
]
}
]
}
Do you know how to retrieve the data?
After you retrieve the data, parsing it is very simple. To get each individual item with its attributes I would use the following code:
String responseFromUrl;
JSONObject JSONResponse = new JSONObject(responseFromURL);
JSONArray level = JSONResponse.getJSONArray("level");
//The following loop goes through each object in "level". This is nessecary if there are multiple objects in "level".
for(int i=0; i<level.length(); i++){
JSONObject object = level.get(i);
int id = object.getInteger("id");
JSONArray server = object.getJSONArray("server");
//This second loop gets the score and name for each object in "server"
for(int j=0; j<server.length(); j++){
JSONObject serverObject = server.get(i);
int score = serverObject.getInteger("score");
String name = serverObject.getString("name");
}
}
Obviously replace "responseFromUrl" with the JSON response from the url in string format. If you don't know why I used JSONObject, JSONArray, String, Integer, etc., or are just confused about this, Udacity has a good course for making http connections and parsing JSON responses from APIs.
Link to Udacity Course
You can use the gson library to convert json to an java object
Download the latest jar and import into your project, currently you can download the latest at this link:
https://repo1.maven.org/maven2/com/google/code/gson/gson/2.8.1/gson-2.8.1.jar
After, this will help you:
https://stackoverflow.com/a/23071080/4508758
Hugs!
I successfully get data from wcf web service in my android studio app.
I get this format for the json response.
{"GetProdByBizResult":{"TotalCount":4,"RootResults":[{"catId":1348,"catOrder":1,...
what is the parameter that has to be provide in order to convert it to JSONArray ?
JSONArray jsonArray = jsonResponse.getJSONArray("RootResults");//this doesn't work
I found a workaround by replacing my json string to "RootResults":[{"....}]}"
then
jsonResponse.getJSONArray("RootResults");
is working perfect
{
"GetProdByBizResult": {
"TotalCount": 4,
"RootResults": [
{
"catId": 1348,
"catOrder": 1
}
]
}
}
Json array "RootResults" is a part of json object "GetProdByBizResult" so we need to take "GetProdByBizResult" josn object first and then from this object you can fetch the "RootResults" json array, like
JSONObject jsonObject = jsonResponse.getJSONObject("GetProdByBizResult");
JSONArray jsonArray = jsonObject.getJSONArray("RootResults");
I have a JSON Like this
{ "video":{
"video_3745":{ },
"video_3437":{ },
"video_3471":{ },
"video_4114":{ }
}
}
In which every "video_xxxx" is of the SAME type. Is there a way to treat the "video" field as an array of that type? I need to iterate over all the videos, but the API is not sending them in an array, and I don't know how to model a class to receive this JSON without having to manually specify all the field names...
does GSON or LoganSquare have anything to help me out with this?
Try something like this
JSONObject video= json.getJSONObject("video"); // json is the whole response
Iterator x = video.keys();
JSONArray jsonArray = new JSONArray();
while (x.hasNext()){
String key = (String) x.next();
jsonArray.put(video.get(key));
}
You can't treat them as an array, but with the org.json.JSONObject class you can get the list of keys and iterate over them. I believe in GSON the JsonObject.entrySet method will allow something similar.
https://developer.android.com/reference/org/json/JSONObject.html
https://google.github.io/gson/apidocs/com/google/gson/JsonObject.html
I have this class:
class Type{
public int id;
public String name;
}
and I want to format object in JSON this way
{[1,"superMarket"],[2,"restaurant "]}
and also put data from JSON to "Type" object
can some one help me please......
You can get an easy to understand example for encoding and parsing json:
Android JSON Tutorial: Create and Parse JSON data
and
JSON in Android - Tutorial
you nee to use a jasonArray and thee jsonObject ro do this..
you can viw this answer
Android create a JSON array of JSON Objects
Type to JSON
JSONObject jsonObj = new JSONObject();
jsonObj.putString("id", id);
jsonObj.putString("name", name);
You can add as many jsonObjs to JSONArray.
JSON to Type
Type type = new Type();
type.setId(jsonObj.optString("id"));
type.setName(jsonObj.optString("name"));
public void HelloWord {
for (int i = 0; i < 20; i++) {
Log.d("Great");
}
}
The code above doesn't work why?
I try to get value name
Does anybody know where is the problem?
org.json.JSONException: Value ...Content of link... at
org.json.JSON.typeMismatch at org.json.JSONArray.
I prefer to use the GSON library, as it is a fast and effective JSON parser. Once added to the project you will need to create classes to represent the data returned. You then can call a single function to create your objects for you:
gson.fromJson();
An exceptionally good article on the use of GSON can be found at http://www.javacodegeeks.com/2011/01/android-json-parsing-gson-tutorial.html - it even uses Twitter for the example.
I think that you are missing the way that JSON works. Anything in {} is an Object, while [] designates an array. So the root of the twitter feed is a JSONObject, NOT a JSONArray:
Try something more like this:
JSONObject obj = new JSONObject(mStringBuilder.toString());
JSONObject trends = obj.getJSONObject("trends");
JSONArray today = trends.getJSONArray("2012-04-10");
for (int i = 0; i < today.length(); i++) {
JSONObject tag = today.getJSONObject(i);
String name = tag.getString("name");
// do whatever with name
}
Much easier, and its clearer how it works. JSONObjects are dictionaries, with a simple mapping between keys and values - each Object ({}) can contain either more objects, or arrays ([]) which can contain either simple integers or more objects